New Zealand Journal of Marine and Freshwater Research abstracts

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AGE AND GROWTH OF THE PUFFERFISH URANOSTOMA R1CHEI (PLECTOGNATHI: LAGOCEPHALIDAE) FROM LYTTELTON HARBOUR

G. Habib*

Zoology Department, University of Canterbury, Christchurch, New Zealand

Abstract The age of pufferfish Uranostoma richei (Freminville) in Lyttelton Harbour, South Island, New Zealand is described from analyses of length-frequency distributions and growth zones in otoliths. Length-frequency analysis is adequate only for aging smaller fish. The validity of using growth zones in otoliths is checked by examining the pattern and time of zone formation. Length-weight relationships are established and growth rates calculated. Compared with males, females grow faster (2.4cm.y"¹; 2.1 for males), attain a larger size (to 18cm and 120g; 12cm and 40g for males) and live longer (to 7 y; 5 for males).

N.Z. Journal of Marine and Freshwater Research 11 (4): 755-66.
Received 16 February 1977; revision received 8 August 1977. Fisheries Research Division Publication 309.

PDF file of entire paper: medium quality (597K); (scanned from paper original: notes about this process)

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